2746GOVERNMENT GAZETTE, WA 31 July 2018

2746 GOVERNMENT GAZETTE, WA 31 July 2018 3.1.2 Guttering and downpipes The owner or occupier of a dwelling house which has guttering and downpipes shall— (a) maintain all guttering, downpipes and drains on the premises in a good state of repair, clean and free from obstruction; and (b) not permit any rainwater from the premises to discharge from the guttering onto or over a footpath, street or other property. 3.1.3 Disposal of rainwater The owner or occupier of a dwelling house shall not use or occupy or permit to be used or occupied, a dwelling house unless all rainwater is effectively disposed of or collected in an approved manner that will not be a nuisance or injurious or dangerous to health of any person. Division 2—Ventilation of Houses 3.2.1 Exemption for short term hostels and recreational campsites This division shall not apply to short term hostels and recreational campsites referred to in Division 1 of Part 8. 3.2.2 Overcrowding The owner or occupier of a house shall not permit— (a) a room in the house that is not a habitable room to be used for sleeping purposes; (b) a habitable room in the house to be used for sleeping purposes unless— (i) for every person over the age of 10 years using the room there is at least 14 cubic metres of air space per person; and (ii) for every person between the ages of 1 and 10 years there is at least 8 cubic metres of air space per person; or (c) any garage, shed or area under a veranda or patio to be used for sleeping purposes. 3.2.3 Calculated sufficient space For the purpose of clause 3.2.2, in calculating the space required for each person— (a) each room shall be considered separately and sufficient space shall be allowed in each room for the number of persons present in the room at any one time; and (b) deduction shall be made for the space occupied by furniture, beds, equipment, fittings and projections of the walls into a room. 3.2.4 Ventilation (1) A person shall not use or occupy, or permit to be used or occupied, a house unless the house is properly ventilated. (2) For the purpose of subclause (1) a house shall be deemed to be properly ventilated if it complies with the Building Code, including the provision of— (a) natural ventilation; or (b) a mechanical ventilation or air-conditioning system complying with AS1668.2:2012. (3) The owner of a house provided with a mechanical ventilation or air-conditioning system as its only or prime means of ventilation shall ensure that the system is— (a) maintained in good working condition and in accordance with AS/NZS3666.2:2011; and (b) in use at all times the building is occupied if the building is without approved natural ventilation. (4) If, in the opinion of an Authorised Officer, a house is not properly ventilated, the Authorised Officer may by notice require the owner of the house to— (a) provide a different, or additional method of ventilation; or (b) cease using the house until it is properly ventilated. 3.2.5 Sub-floor ventilation The owner or occupier of a house shall make provision for sub-floor ventilation by ensuring that air bricks and other openings are kept clear of refuse, vegetation, building materials, dirt and the like. Division 3—Water Supply 3.3.1 Water supply (1) The owner of every house shall provide a continuous supply of drinking water, reticulated for use and obtained from— (a) a licensed water service operator; (b) an underground bore; or (c) a rainwater storage system with a minimum capacity of 120,000 litres. (2) The water supply shall at all times deliver an adequate supply of drinking water to each tap in the house.